ATMEGA645-16AI vs ATMEGA649-16AI Comparison
Detailed side-by-side comparison of ATMEGA645-16AI by Microchip Technology and ATMEGA649-16AI by Microchip Technology. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Microchip Technology
ATMEGA645-16AI - 8-bit AVR MCU 64KB Flash 16MHz | Microchip
ATMEGA645-16AI ✓ ActiveMicrochip Technology
ATMEGA649-16AI - 8-Bit AVR MCU 16MHz 64KB Flash | Microchip
ATMEGA649-16AI ✓ ActiveSpecification Comparison
| Parameter | ATMEGA645-16AI | ATMEGA649-16AI |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $6.45 | $0.00 |
| Core Architecture | 8-bit AVR RISC | — |
| Flash Program Memory | 64 KB (32K x 16) ISP | — |
| SRAM | 4 KB | — |
| EEPROM | 2 KB | — |
| Maximum Clock Frequency | 16 MHz | 16 MHz |
| Throughput | 16 MIPS at 16 MHz | — |
| Operating Voltage Range | 2.7 V to 5.5 V | — |
| ADC | 8-channel, 10-bit | — |
| Programmable I/O | 68 (device), 54 available on 64-TQFP | — |
| JTAG Interface | Yes (on-chip debugging and boundary scan) | — |
| Instruction Set | 130 instructions, mostly single-cycle | 130 powerful instructions, most single-cycle |
| Operating Temperature | -40C to +85C (industrial, I grade) | -40C to +85C (industrial grade, per Atmel part number suffix 'I') |
| Package | 64-TQFP (14x14 mm) | 64-TQFP (14x14 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Interfaces | USART, SPI, TWI (I2C) | — |
| ISP Capability | In-System Programmable Flash | — |
| RoHS Status | Compliant | Compliant (per Microchip product listing) |
| Core | — | AVR 8-Bit RISC |
| Core Size | — | 8-Bit |
| Program Memory Size | — | 64 KB (32K x 16) Flash, ISP, read-while-write |
| EEPROM Size | — | 2 KB |
| SRAM Size | — | 4 KB |
| General Purpose I/O | — | 54 I/O lines (TQFP-64 configuration) |
| Working Registers | — | 32 x 8-bit general purpose |
| JTAG | — | Yes (on-chip debug and boundary scan) |
| LCD Controller | — | On-chip segment LCD driver |
| Supply Voltage Range | — | [DATA_NEEDED: supply voltage range] |
| Programming Interfaces | — | ISP (SPI), JTAG, ICSP via MPLAB SNAP |